Pile for wharves, &amp;c.



UNITED STATES ATENT OFFICE.

EDIVIN THACHER, OF NEW YORK, N. Y.

PILE FOR WHARVES, 80C.

SPECIFICATION forming part of Letters Patent No. 691,417, dated. January 21, 1902.

Application filed June 24, 1901. Serial No.65,730. (No model.)

To (I/ZZ whom it may concern:

Be it known that I, EDWIN THAOHER, a citizen of the United States, residing in the borough of Manhattan, in the city of New York, county and State of New York, have invented a new and useful Improvement in Piles for Wharves, &c., of which the following is a specification.

My invention relates to piles used in the construction of wharves or the like.

The purpose of my invention is to make a pile of concrete steel construction which shall have certain advantages over those heretofore employed.

It consists, primarily, of a pile having a body of concrete and provided with a plurality of longitudinal metallic bars embedded therein and with a plurality. of shorter metallic bars also embedded therein near the head, with sundry additional features of construction.

In the drawings, Figure 1 is a side elevation and partial section on the plane of the line 1 l in Fig. 2 of one of my improved piles. Fig. 2 is a plan view of the head of the same. Fig. 3 is a side elevation and partial section on the plane of the line 3 3 in Fig. 4 of several of the piles arranged together and used as sheetpiling, and Fig. 4 is a plan view thereof. Fig. 5 is an end View of one of the piles shown in Figs. 3 and 4, and Fig. 6 is an enlarged detailed view showing the form in which I prefer to make the metallic bars which are embedded in the pile and form a part thereof.

In the drawings, a represents the body of the pile, which is made of concrete and formed in a mold in a manner well understood by engineers and which needs no particular description.

b b b b are longitudinal bars embedded in the concrete in the process of molding and extending through or nearly through the entire pile.

c c c c are shorter metallic bars embedded in the concrete at the head of the pile.

d is an encircling metallic band passed around the head of the pile.

c is a separable elastic cushion or head made of wood and slightly smaller in diameter than the head of the pile and of any suitable length.

f is a central eyeboltor ring-bolt embedded in the pile at the head, so as to permit the pile to be withdrawn from its position.

9 is a tongue formed along one of the sides of the pile in the process of molding, preferably witlnsloping sides 9. h is a groove formed on the opposite side of the same pile. By this arrangement the piles may be joined together. \Vhere it is desired that this joint shall be water-tight, the groove is made larger in area in cross-section than the correspond? ing tongue g, as is seen in Fig. 4, where adjoining piles provided with tongues and grooves of this construction are made into sheet-piling. A longitudinal slot 7 is thus formed between the outer face of the tongue and the inner surface of the groove, and this slot being filled with grouting forms of the two adjoining piles, in effect, a monolithic structure.

In Fig. 6 I illustrate the preferred form of the bars bb b b, in which depressions are made in the bar so as to afford resistance to longitudinal strain upon the bars not due merely to adhesion between the bars and the concrete. One of the bars I) I prefer to make hollowfor instance, of gas-pipeso that a jet of water or similar fluid may be developed at its lower extremity to assist in thedriving of the pile.

The piles, whether single or used for sheeting, may be provided with metal shoes in the usual manner.

The piles described are easily made, are of great strength, are not likely to shatter when driven, are provided with internal means for supplying the jet at the bottom of the pile, (when sand or other materials which maybe displaced in this manner are encountered,)are peculiarly adapted to form a unitary structure when used as sheet-piling, and mayby means of the ring-bolts be withdrawn from place without destruction.

What I claim as new is- 1. A pile having a body of concrete provided with a plurality of longitudinal metallic bars embedded therein and with a plurality of shorter metallic bars also embedded therein near the head of the pile and a head provided with an encircling metallic band.

2. A pile having a body of concrete provided with aplurality oflongitudinal metallic bars embedded therein and with a plurality of shorter metallic bars also embedded therein near the head of the pile, one of the longer bars being made hollow and affording a conduit through the pile and a head provided with an encircling metallic band.

3. A pile having a body of concrete provided with aplurality of longitudinal metallic bars embedded therein and with a plurality of shorter metallic bars also embedded therein near the head of the pile and provided with a projecting ring-bolt at the head.

4. A pile having a body of concrete pro vided with a plurality of longitudinal metallic bars embedded therein and with a plurality of shorter metallic bars also embedded therein near the head of the pile in combination with a separable elastic cushion or head adapted EDWIN THAOHER.

W'itnesses:

HERMAN MEYER, MABEL K. WHITMAN. 

